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[InstrProf] Add the skipprofile attribute
As discussed in [0], this diff adds the `skipprofile` attribute to prevent the function from being profiled while allowing profiled functions to be inlined into it. The `noprofile` attribute remains unchanged. The `noprofile` attribute is used for functions where it is dangerous to add instrumentation to while the `skipprofile` attribute is used to reduce code size or performance overhead. [0] https://discourse.llvm.org/t/why-does-the-noprofile-attribute-restrict-inlining/64108 Reviewed By: phosek Differential Revision: https://reviews.llvm.org/D130807
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Original file line number | Diff line number | Diff line change |
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@@ -1,24 +1,24 @@ | ||
// RUN: %clang -fprofile-generate -fprofile-function-groups=3 -fprofile-selected-function-group=0 -emit-llvm -S %s -o - | FileCheck %s --check-prefixes=CHECK,SELECT0 | ||
// RUN: %clang -fprofile-generate -fprofile-function-groups=3 -fprofile-selected-function-group=1 -emit-llvm -S %s -o - | FileCheck %s --check-prefixes=CHECK,SELECT1 | ||
// RUN: %clang -fprofile-generate -fprofile-function-groups=3 -fprofile-selected-function-group=2 -emit-llvm -S %s -o - | FileCheck %s --check-prefixes=CHECK,SELECT2 | ||
// RUN: %clang -fprofile-generate -fprofile-function-groups=3 -fprofile-selected-function-group=0 -emit-llvm -S %s -o - | FileCheck %s --implicit-check-not="; {{.* (noprofile|skipprofile)}}" --check-prefixes=CHECK,SELECT0 | ||
// RUN: %clang -fprofile-generate -fprofile-function-groups=3 -fprofile-selected-function-group=1 -emit-llvm -S %s -o - | FileCheck %s --implicit-check-not="; {{.* (noprofile|skipprofile)}}" --check-prefixes=CHECK,SELECT1 | ||
// RUN: %clang -fprofile-generate -fprofile-function-groups=3 -fprofile-selected-function-group=2 -emit-llvm -S %s -o - | FileCheck %s --implicit-check-not="; {{.* (noprofile|skipprofile)}}" --check-prefixes=CHECK,SELECT2 | ||
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// Group 0 | ||
// SELECT0-NOT: noprofile | ||
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// SELECT1: noprofile | ||
// SELECT2: noprofile | ||
// CHECK: define {{.*}} @hoo() | ||
void hoo() {} | ||
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// Group 1 | ||
// SELECT0: noprofile | ||
// SELECT1-NOT: noprofile | ||
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||
// SELECT2: noprofile | ||
// CHECK: define {{.*}} @goo() | ||
void goo() {} | ||
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||
// Group 2 | ||
// SELECT0: noprofile | ||
// SELECT1: noprofile | ||
// SELECT2-NOT: noprofile | ||
|
||
// CHECK: define {{.*}} @boo() | ||
void boo() {} |
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